Roland produced a wide range of expansion boards for the JV-Series synths. Many were developed in conjunction with Spectrasonics, a company set up to sample sounds & map them across a keyboard

Some expansion cards were outside the traditional numbering scheme and were only sold bundled with keyboards. Below is a list of Roland board numbers & names

SR-JV-01 Pop
SR-JV-02 Orchestral
SR-JV-03 Piano
SR-JV-04 Vintage Synth
SR-JV-05 World
SR-JV-06 Dance
SR-JV-07 Super Sound Set
SR-JV-08 Keyboards of the 60s and 70s
SR-JV-09 Session
SR-JV-10 Bass & Drums
SR-JV-11 Techno Collection
SR-JV-12 Hip Hop Collection
SR-JV-13 Vocal Collection
SR-JV-14 World Collection Asia
SR-JV-15 Special FX Collection
SR-JV-16 Orchestral 2
SR-JV-17 Country
SR-JV-18 Latin
SR-JV-19 House
SR-JV80-97 Experience III

For more information on SR-JV synths see here